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Post by jdean492 on Jan 27, 2016 10:44:39 GMT -7
Hi guys,
Long time reader of the forum here, but this is my first post I believe.
I have an EZG 50 that I bought several years back from a guy in Florida. It has been sitting around for a while, not getting much use, but I recently started a new band/project with some buddies where I intend to use it. When I got set up for our first session, I turned the amp up and it started to squeal, high pitched and loud, when I turned the amp down (pre and post at 9) it went away. I played around with it some and it seemed I could get a little more volume if I turned the reverb completely down. Not sure whats going on here, I'm assuming it's a tube issue. Anyone have any experience with this? Other thoughts?
Thanks
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Post by harry on Jan 27, 2016 11:47:01 GMT -7
I had a similar problem with mine and it turned out to be the reverb tank. When I unplugged the tank the squeal went away but I went through every tube in the process, even a new reverb tube. Hope this helps
Harry
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Post by ME on Jan 27, 2016 17:44:18 GMT -7
If it is the tank, it could be a vibration from the chassis. I had an amp which one day I looked at the reverb tank. Cleaning and whatnot. I thought the tank was upside down and when I put it back together I flipped it. Well then there was a squeal feedback. After spending some time trying other solutions to my problem I turned the tank over and buttoned it up and when I turned it on, surprise, no squeal. I'm not one to let things lie, so I took the tank out again and flipped it back to the "right" way. Re installed the bag and turned it on. Shockingly the squeal was back. I again took it apart and put the tank back in its original orientation and when I had reassembled it the squeal was gone. I left it like that for as long as I owned the amp. Made no sense, but as my wife will point out, I am a man. ME
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Post by DRZ on Jan 27, 2016 18:23:35 GMT -7
Well two things you stated that perked my ears. 1) Lived some of its life in FLA. High humidity and metal oxidation 2) Sat around for a while
Try this remove the two 4X40 screws that bolt the reverb Transformer to the chassis, ( reverb Tranny is the small black one between V3 andV4 ) Gently pull it up and tilt it, then with a file , file the bottom tabs that hold the screws and attach to the chassis. Give it a good cleaning with the file so you see raw shinny metal. This will make a positive connection to the chassis once you bolt it back with the 4X40 screws.
Let us know if that worked.
DR.Z
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Post by jdean492 on Jan 27, 2016 19:35:42 GMT -7
Thanks for the replies, I will give those things a try. The amp is currently up at our practice space and I won't be back there till Monday. I'll let you know if it solves the issue.
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seanz
New Member
Posts: 44
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Post by seanz on Feb 6, 2016 13:50:34 GMT -7
I had the same thing happen....in my case it was the leads from the reverb tank not being properly seated. Try unplugging and reseating the wires that go to/from the reverb tank. Cheers, Sean
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